German, Tier X, SPG.
There is a Sturmtiger hidden in a garage on the map Severogorsk.
Edit: The tank was featured in a fun mode for WoT's 10th anniversary in 2020, in a 10 vs 10 Sturmtiger mode.
History[]
Sturmpanzer VI Sturmtiger Wikipedia article here: http://en.wikipedia.org/wiki/Sturmtiger
